body{
    background: url("../img/bj_3.jpg") no-repeat center;
    background-color: rgb(2,6,17);
}
.box{
    width: 500px;
    height: 400px;
    margin: 150px auto;
}
.p1{
    font-size: 30px;
    font-family: 华文新魏;
    color: black;
    padding-left: 170px;
    padding-top: 70px;
}
.p2{
    padding-left: 330px;
    padding-top: 20px;
}
.p3{
    font-size: 30px;
    font-family: 华文新魏;
    color: white;
    padding-left: 140px;
    padding-top: 70px;
}
.bdan{
    margin-left: 50px;
    margin-top: 50px;
}
.in1{
    background: red;
    border: none;
    width: 80px;
    height: 30px;
    color: white
}
.in2{
    height: 27px;
}